...In the context of the original post, the Brits may be accused of 'ignorance' in not speaking French, but the word 'arrogance' is reserved solely for the French. It is a national pastime in which they pride themselves.
There has to be a common language around the world for various applications, flying being but one, and it irks the French no end that it is not their language.
They are also of the opinion that they (the French) liberated France in WW2, with the Allies merely there for support. They just can't bear to tell it as it was! Pride, Ignorance, Arrogance? You decide!!